“It tripped the plant and took out two transformers,” said Renee Molyneux, administrative services manager for the Grand Haven Board of Light & Power.
Molyneux said power went out for about 5,500 customers at 5:43 p.m. It was restored, using power off the grid, at about 7 p.m.
The outage included all of downtown Grand Haven and the east side of U.S. 31 to about Beechtree Street and south to Robbins Road, she said.
The Sims III power plant on Harbor Island was brought back online at 3:18 a.m. Thursday.
The power outage affected Fourth of July traffic as Grand Haven’s beaches were already packed by people trying to get relief from temperatures in the upper 80s. It also affected people coming into town for the Fourth of July fireworks.
The Grand Haven Department of Public Safety said there were no reported traffic issues, injuries or incidents related to the outage.